package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.info.ProjectInfoProperties;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Locale;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对明文进行md5加密
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //新增员工，把dto转换成实体类
    @Override
    public void save(EmployeeDTO employeedto) {
        //创建实体类对象
        Employee employee=new Employee();

        //把dto中的属性拷贝到实体类中
        BeanUtils.copyProperties(employeedto,employee);

        //把剩下的属性补充完整
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());*/

        //在拦截器处存入id的取出
        /*employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setCreateUser(BaseContext.getCurrentId());*/

        employeeMapper.insert(employee);
    }

    //分页查询
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //底层利用Threadlocal把页码和一页有多少大保存起来并自动在xml中进行拼接
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        Long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    public void stopAndStart(Integer status, Long id) {
        Employee employee=Employee.builder()
                        .status(status)
                        .id(id)
                        .build();


        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Integer id) {
        Employee employee=employeeMapper.getById(id);
        //增加保密性
        employee.setPassword("*****");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        //创建实体类对象
        Employee employee=new Employee();

        //把dto中的属性拷贝到实体类中
        BeanUtils.copyProperties(employeeDTO,employee);

        /*//把剩下的属性补充完整
        employee.setUpdateTime(LocalDateTime.now());
        //在拦截器处存入id的取出
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.update(employee);
    }

}
